Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Chalcedony from
Saint-Paul vein (Les Romains vein), La Rodde mine, Ally, Brioude, Haute-Loire, Auvergne-Rhône-Alpes, France


Locality type:Vein
Classification
Species:Quartz var: Chalcedony
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcedony data
Locality Data:Click here to view Saint-Paul vein (Les Romains vein), La Rodde mine, Ally, Brioude, Haute-Loire, Auvergne-Rhône-Alpes, France
Data Identifiers
Mindat Occurrence Record ID:245398
Long-form Identifier:1:3:245398:9
GUID (UUID V4):0
Nearest other occurrences of Chalcedony
15.8km (9.8 miles) ⓘLa Violette farm, Saint-Beauzire, Brioude, Haute-Loire, Auvergne-Rhône-Alpes, France
26.5km (16.4 miles) ⓘClavières d'Outre, Val-d'Arcomie, Saint-Flour, Cantal, Auvergne-Rhône-Alpes, France
38.0km (23.6 miles) ⓘN122 road cut, La Grange de Ganilh, Laveissière, Saint-Flour, Cantal, Auvergne-Rhône-Alpes, France
41.3km (25.7 miles) ⓘLa Bessière Quarry, Saint-Genès-la-Tourette, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
42.4km (26.4 miles) ⓘLa Chaumette, Rimeize, Mende, Lozère, Occitanie, France
42.9km (26.7 miles) ⓘMont Denise, Espaly-Saint-Marcel, Le Puy-en-Velay, Haute-Loire, Auvergne-Rhône-Alpes, France
56.2km (34.9 miles) ⓘChavarot quarry, Saint-Jean-des-Ollières, Clermont-Ferrand, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
61.4km (38.2 miles) ⓘBasalt quarry, Chastreix, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
64.6km (40.2 miles) ⓘVarennes, Chanonat, Clermont-Ferrand, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
64.9km (40.4 miles) ⓘCôte des Pompes, Saulzet-le-Chaud, Romagnat, Clermont-Ferrand, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
References
Périchaud, J.-J. (1968) Les Gisements Métalliques du District à Antimoine de Brioude-Massiac (Massif Central Français). BRGM, xx pp.
 
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